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Science Acids, Bases, and Salts MCQ Questions for Class 10

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Acids, Bases, and Salts Practice Questions

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Question 541/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

अम्लीय विलयन में हाइड्रोजन आयन की मात्रा बढ़ने पर पीएच मान पर क्या प्रभाव पड़ता है?

What happens to the pH value when the concentration of hydrogen ions increases in an acidic solution?

Explanation opens after your attempt
Correct Answer

B. पीएच घटता हैpH decreases

Step 1

Concept

Acidity is related to hydrogen ion concentration.

Step 2

Why this answer is correct

More hydrogen ions mean higher acidity and lower pH.

Step 3

Exam Tip

Lower pH means stronger acidic nature.

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Question 542/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

समान सांद्रता वाले दो अम्लों में जिसका पीएच कम है, वह कैसा होगा?

Among two acids of the same concentration, the one with lower pH will be what?

Explanation opens after your attempt
Correct Answer

A. अधिक अम्लीयMore acidic

Step 1

Concept

Lower pH means higher acidity.

Step 2

Why this answer is correct

At the same concentration, an acid with lower pH produces more hydrogen ions.

Step 3

Exam Tip

Use pH to compare acidity.

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Question 543/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

निम्न में से कौन सा पदार्थ अम्लीय प्रकृति का होता है?

Which of the following substances is acidic in nature?

Explanation opens after your attempt
Correct Answer

B. नींबू रसLemon juice

Step 1

Concept

Lemon juice contains a natural acid.

Step 2

Why this answer is correct

Therefore, it is acidic in nature.

Step 3

Exam Tip

Soap and baking soda solutions generally show basic nature.

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Question 544/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

निम्न में से कौन सा पदार्थ क्षारीय प्रकृति का होता है?

Which of the following substances is basic in nature?

Explanation opens after your attempt
Correct Answer

C. साबुन विलयनSoap solution

Step 1

Concept

Soap solution is generally basic.

Step 2

Why this answer is correct

It can turn red litmus blue.

Step 3

Exam Tip

Vinegar, lemon, and tamarind are examples of acidic substances.

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Question 545/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

मिथाइल ऑरेंज सूचक अम्लीय विलयन में कौन सा रंग दिखाता है?

What colour does methyl orange indicator show in an acidic solution?

Explanation opens after your attempt
Correct Answer

B. लालRed

Step 1

Concept

Methyl orange is a synthetic indicator.

Step 2

Why this answer is correct

It shows red colour in an acidic solution.

Step 3

Exam Tip

Revise indicator colour changes in a separate list.

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Question 546/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

फिनॉल्फ्थेलीन क्षारीय विलयन में कौन सा रंग देती है?

What colour does phenolphthalein show in a basic solution?

Explanation opens after your attempt
Correct Answer

A. गुलाबीPink

Step 1

Concept

Phenolphthalein is a common synthetic indicator.

Step 2

Why this answer is correct

It turns pink in a basic solution.

Step 3

Exam Tip

It remains colourless in an acidic solution.

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Question 547/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

अम्ल और क्षार की अभिक्रिया में ताप बढ़ना किस बात का संकेत है?

A rise in temperature during an acid-base reaction indicates what?

Explanation opens after your attempt
Correct Answer

A. ऊष्मा का उत्सर्जनRelease of heat

Step 1

Concept

Many neutralisation reactions release heat.

Step 2

Why this answer is correct

A rise in temperature indicates release of heat.

Step 3

Exam Tip

Such a reaction is called exothermic.

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Question 548/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

अम्ल और धातु ऑक्साइड की अभिक्रिया में क्या बनता है?

What is formed when an acid reacts with a metal oxide?

Explanation opens after your attempt
Correct Answer

A. लवण और जलSalt and water

Step 1

Concept

Metal oxides are generally basic in nature.

Step 2

Why this answer is correct

They react with acids to form salt and water.

Step 3

Exam Tip

Hence, metal oxides are also called basic oxides.

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Question 549/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

अधातु ऑक्साइड सामान्यतः किस प्रकृति के होते हैं?

Non-metal oxides are generally of which nature?

Explanation opens after your attempt
Correct Answer

B. अम्लीयAcidic

Step 1

Concept

Most non-metal oxides can form acidic solutions with water.

Step 2

Why this answer is correct

Therefore, non-metal oxides are generally acidic in nature.

Step 3

Exam Tip

Remember the comparison: metal oxides are generally basic.

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Question 550/1900 Medium Science Chemical Substances – Nature and Behaviour Acids, Bases, and Salts Class 10 Level 7

यदि किसी विलयन का पीएच दो है, तो वह किस प्रकृति का होगा?

If a solution has pH 2, what will be its nature?

Explanation opens after your attempt
Correct Answer

A. तीव्र अम्लीयStrongly acidic

Step 1

Concept

A solution with pH less than 7 is acidic.

Step 2

Why this answer is correct

pH 2 is a very low value, so the solution is strongly acidic.

Step 3

Exam Tip

On the pH scale, values near 0 indicate high acidity.

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